How to clean yellowed fiberglass

Written by constance barker

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Use cream of tartar to remove yellow stains from fibreglass tubs. (Jupiterimages/Photos.com/Getty Images)

Fibreglass surfaces, such as bathtubs or boat hulls, may form yellow stains over time due to minerals and dirt in water. The yellowing dulls the fibreglass, leaving the once white and gleaming surface looking dingy and worn. Fibreglass requires a robust cleaner that removes the yellow stains without etching the surface. Fortunately, household items from your kitchen remove the discolouration and restore shine to the fibreglass top.

Skill level:

Moderately Easy

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Things you need

Cream of tartar

Bowl

Hydrogen peroxide

Sponge

Cloth

Baking soda

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Instructions

Cream of Tartar

1

Pour 1/4 cup cream of tartar into a bowl. Add 1/2 tsp hydrogen peroxide to the bowl and stir. Continue adding the hydrogen peroxide by 1/2 teaspoonful until the cream of tartar is a thick consistency.

2

Place a small amount of the cleaning solution onto a damp sponge. Wipe the sponge over the yellowed areas of the fibreglass. Place additional cleaning solution onto the sponge as needed. Cover the stains completely with the cream of tartar. Allow the solution to remain on the fibreglass for two hours or until dry.

3

Wet a sponge with warm water. Wipe the sponge over the fibreglass, removing the cream of tartar. Rinse the fibreglass surface entirely and dry with a clean cloth.